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R-1790

Information - Help 
ID = 59103
       
Country:
United States of America (USA)
Brand: RCA (RCA Victor Co. Inc.); New York (NY)
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  HEXODE   VHF 
  Late but no serial production. For instance only development samples. *****
Identical to R-1790
First Source (s)
15.Aug.1939 : - - Data from my own collection
Successor Tubes 1939   1630  

Base SPECIAL TUBEBASE in general
Filament Indirect
Description

Orbital-beam hexode electron-multiplier VHF amplifier (secondary emission). This appears to be a very early prototype of the 1630 VHF amplifier. Giant acorn body, with 12 equally spaced radial pins.

The code is written by hand, with the date, Aug. 15,'39, and with a series of numbers, 15/4.7 - 16.

This sample comes with its lab built socket and bottom copper shield.

 
Dimensions (WHD)
incl. pins / tip
55 x x mm / 2.17 x x inch
Tube prices 1 Tube prices (visible for members only)
Literature -- Collector info (Sammler)   
 
r1790_03.jpg
R-1790: Private collection
Emilio Ciardiello

 


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